Big Kahuna XL - Tortoise Fade - Jet Black Polarized Moto Detour lists permanent anti-fog integration:

Detour lists permanent anti-fog integration: the inner lens material is fused with anti-fog properties so it can never be wiped away and degrade performance over time

• Permanent anti-fog integration (inner fused anti-fog

and the lens includes an anti-scratch coating to help minimize lens damage from normal use

What does that add up to in real life

Big Kahuna XL - Tortoise Fade - Jet Black Polarized Moto Detour lists permanent anti-fog integration:KEY FEATURES XL frame size Comfortable spring hinges (no annoying temple pressure) Polarized UV400 Protective Hydrophobic and salt water resistant lens coating Soft rubber no slip no bounce frame coating (yes, even when you sweat) Impact resistant lenses FDA approved Free Detour pouch included Jet Black Gray Base ~ 13% VLT FIT & SIZING XL sunglasses for big heads! Big Kahuna XL frame fits large XL faces best. Frame measurements: 151 mm frame width, 51